Lock for sliding windows



Jan. 19, 1965 R. c. ANDREWS 3,166,347

LOCK FOR suomc wmoows 2 Sheets-Sheet 1 Filed Oct. 50, 1961 l IN VEN TOR.

Jan. 19, 1965 R. c. ANDREWS 3,166,347

LOCK FOR SLIDING WINDOWS 2 SheetsSheet 2 Filed Oct. 30 1961 INVENTOR.

I z to cooperate with-the United States Patent 3,166,347 LOEK FUR SLIDING WINDOWS Raleigh C. Andrews, 9341 Springfield, Skokie, Ill. Filed (let. 30, 1961, Ser. No. 148,459 4 Claims. (Cl. 292-202) My invention relates to locking devices for sliding windows.

The prime object of my invention is to provide a simple, economical and effective device for locking sliding windows.

Another object of my invention is to provide a device of the character described, that can be easily installed on Windows of various thicknesses and in different positions on a wind-ow without requiring special adjustments for each thickness of window pane material or position of the device.

Still another object of my invention isto provide a device of the character described, that functions to lock the window in any position from fully closed to fully open.

A further object of my invention is to provide a device of the character described, with a plurality of flat bearing surfaces being spaced at various radial distances from a pivot and rotatable around said pivot so as to provide a snuhbing surface parallelto and in contact with the pane material. 7

In the drawings:

FIGURE 1 is a perspective view of a typical sashless window structure with the locking device installed;

FIGURE 2 is a sectional plan view taken along lines 22 of FIGURE 1;

FIGURE 3 is an enlarged fragmentary perspective view of hte locking device and sashless Window structure showing one of the flat snubbing surfaces incontact with the Window pane;

FIGURE 4 is a side elevation of the locking element; FIGURES is a perspective view of a modified form of the invention; I i

FIGURE 6 is a sectional illustration of the invention lines 6-6 of FIGURES;

FIGURE 7 is a sectional view of the upper portion of the construction illustrated in FIGURE and taken along the section lines 77 of FIGURE 5; i p FIGURE 8 is a perspective view of a guiding-element utilized with the embodiment of FIGURES 5, 6 and 7; and i FIGURE 9 is a perspective view of a spring, element drawings, the movable paneylS is adapted for sliding movement between anopen position in which the pane overlies pane 16 and a closed position, as illustratedin the drawings. Pane 15 is mounted for sliding movement in grooves in the sill 13 and headpiece 14. The groove I7 in the sill may be enlarged alongside the stationary pane 16 so that Whenthe pane I5 is moved to theopen position, it is spaced a small distance from the stationary pane 16. In order .to facilitate such spacing as'well as locking device hereinafter-described, the movable panelS may. have a small projection 18 thereon, which projection .18 is held by the manipulating knob 19, The projection 13 may beso positioned on the movable pane 15 that Whenthe movable pane/15 is in the closed position, as illustrated in FIGURE 2, and

when the overlapping portions of the two panes are flush with one another, the projection 18 is abuttable against the exposed and opposed vertical edge 20 of the stationary pane 16. The knob 19 and projection 18 may be afilxed to the movable pane 15 by means of a threaded bolt passed through a bore in the movable pane 15.

In order to hold the movable pane 15 in the fully closed position, a locking device generally designated as 21 is positioned on the sill 13 and is operative to force the movable pane 15 tightly into sealing and locking engagement with pane 16 in a manner to be described more fully hereinafter.

It should be understood that while the locking device as set forth herein is particularly suitable to this form of sliding window construction, it may, under certain circumstances, be applied to other slidingwindow constructions.

ment 22 is positioned to rotate about a horizontal axis.

The element 22 is of irregular shape defined by a pair of flat parallel sides 26 which are normal to its pivotal axis, a plurality of fiat snubbing surfaces 27, 28, 29, 30 and'31 forming ends of the element parallel to and at varying radial distances from the axis of rotation, and

- an extension piece 32 for use as a handle extending genas illustrated in FIGURE 5 and taken along the section erally in the opposite direction from the pivotal axis as the snubbing surfaces. I

The snubbing surfaces 27, 28, 29, 30 and 31 as shown in FIGURE 4 are located in the upper quadrant of a circle described normalto the axis of rotation of the element 22, with the lower edge of each snubbing surface merging with the upper edge of the snubbing surface be low defining a corner which is slightly rounded, the lower edge of each surface being located at a decreasing radial distance from the axis of rotation of the element and the plane of each snubbing surface forming an included ob- .tuse angle with the plane of the adjoining snubbing surface, the included obtuse angle b'etween surfaces being on the order of 150. As is seen in the drawings (FIG- URE 4), the snubbiug surface at each corner and or greater radial spacing than its adjacent snubbing surface is generally perpendicular to the radius fromthe axis of rotation and extended to, that corner.

1 To lock the Window the element 22 is rotated aboutits pivotal axis so that the snubbing surfaces move in a downwardly direction until the snubbing surface 27 nearherein is highly advantageous in that precise positioning est to the pivotal axis assumes a position parallel to the inner window pane 15. Ifthe lowest snubbing surface pane 15. r

The window is unlocked by rotating the element-Misc as to move the snub-hing surfaces 27, 28, 29, .30 and 31 in an upward direction and away from contact with the inner window pane. thus releasing the inner window pane and leaving it free to slide.

The particular locking device illustrated and described does not come in contact with" the" inner windowp'ane then the downward rotation of the element is continued 3 V of the device relative to the sliding pane is unnecessary. It need only be located in general proximity to the pane 15 for the reason that when positioned at varying distances from the pane 1.5, one or the other of the several snubbing surfaces on the locking elements. are uroperly spaced for locking engagement with the window. Each of the plurality of fiat surfaces provides a relatively large bearing area against the window pane. The slight variance in the angular position between the snubbing surfaces enables easy movement of the locking element from one locking position to another. For example, if one flat surface is disposed adjacent'to the movable pane and in relatively loose-engagement therewith, movement of the locking element to the next snubbing surface is easily accomplished in that the junction between the adjacent snubbingsurfaces easily moves past the pane As is seen in FIGURE 4, the radial distance from the center of the snubber to a corner between adjacent surfacesis-never greater than any radial distance from the center of the sri-ubber to any point on the. further of the two surfaces defining the corner. Thus, they corners slide easily across screws after a long IP51'lOd of use does not disadvantageously affect the operation of the device, in that the locking element may besimply rotated to the next locking position, thereby disposing the next snubbing surface in engagement with the movable pane in the locked position of the window. In this same connection, while precise positioning of the device relative to the panes is unnecessary in initial installation, it is advantageous to so position the device as to attempt to initially use one of 1 the first snubbng surfaces; during'the initial phase of use of the structure. I i FIGURES 5 through 9 inclusive represent 'a further A spring arm 52 is positioned in'upper groove 45 and biases the upper portion of pane 42 toward the fixed pane, when the panes arefully closed or partially open. This spring arm 52 may be integral with a base 53 which is adapted to be positioned between the base of the upper locking device and fixed unitarily therewith to the upper frame member. The spring arm preferably has a curvilinear form, as is seen in FIGURES 7 and 9 so that the medial, bowed portion of the, arm contacts the movable pane.

In FEGURES 5-9, the locking devices are shown positioned the same as in FIGURE 1, but are preferably positioned to the right of the position illustrated and outside of the exposed side edge of the fixed pane 41; This position is preferable when two pairs of fixed and movable sashes, as shown herein, are positioned side by side with an air space between pairs for insulation purposes. This position makes it easier to reach the locking devices for the outer pair, as well as facilitating removal of the panes.

In the form of the invention of FIGURES 5-9, the movable pane is prevented from endw-ise sliding move ment because of the pressure of the locking devices 43 and the opposed surface 51. When the locking devices are released, the spring 52 holds the panes against one another to minimize rattling. As the movable pane is opened, it glides over surface 51, which spaces the lower portions of the panes, the spring 52 tending to keep the embodiment-of the invention. .In' thesefigures, the frame id-is essentially the same as that of FIGURE 1, with a fixed pane 41 and a movable pane 42. In these figures,

locking devices 43, similarin all respects to that shown in FIGURES 24, are disposed on the sill and the upper frame member or lintel so as to frictionally engage both upper portions in contact. When the movable pane is fully opened, it may be fully away from the spring 52.

When the pane 42 is moved to the closed position, it is contacted by spring 52 and moved toward the fixed pane. a

. In FIGURES 5 through 9, the use of the spring arm 52, guide sur-face 51 and locking devices enhance the manufacturing process in thatthey enable the use of simpler upper and lower guiding grooves, than previous sliding window constructions having glass to glass seals.

The form of the grooves to receive the panes illustrated in FIGURES 5-9 may, if desired be utilized with the form of the handle and-locking device illustrated in FIG- URES l-4. p i

'In all of the embodiments illustrated herein, the loch ing'devices may be used to hold the movable panes in a the. upper and lower portions of movable pane 42, and 1 force the same tightly against the end portion of the fixed pane as at 44 to create a tight glass'to glass seal.

Both the groove 45 in the upper frame-member andthe groove 46 in thelower frame member are Wider than the 1 combined thicknesses of the fixed pane'and movable pane so. that when the locking devices 43 are released, the movable pane 42 maybe moved away from and spacedfrom the pane 41. o p

A manipulating handle orknob 47 is fixed'to that end of the movable pane 4 2, which is remote from fixed pane 41 in the totally closed position.

V A- guide piece 48 is positioned in the lower groove 46 adjacent the fixed'pane 41 and serves tokeep the lower portionof pane 42spa'ced'from pane 41in the partially or fullyopen'ed position. As seen in FIGURE 8, this guide piece includes a basei49 which is adapted to be recessed into the botton'rv of groove 46 and fixed thereto. It alsoincludes an upstandingportion 5,0 which presentsan arcuate surface 51 to the pane 42. The surface 51 is sufiiciently close to the fixed pane that the movable pane glides-smoothly thereoverwhen it is freed for" movement away from the fixed pane. This surface comprises adisiance which is substantiallyless than a semicircle. :lnthe closed position ofpane 42, the edge'thereof is opposed to the. arcHatesurfaceSl. As this pane is.

i opened, its edge 'slidessmoothly around the arcuat'esurface, thus spreading'the two. panes until the side of the movable paneslides over the surface 51.

partially open position, as for example, by forcing the movable pane against surface 51 in FIGURESS 5-9, or the projection 18 against the fixed pane in FIGURES 1-4.

Whereas I have shown and described an operative form of the invention, it should be understood that this showing and description thereof should be taken in an illustrative or diagrammatic sense only. There are many-modifications inand to the invention which will fall within a the scope andspir it thereof and which will be apparent to those skilled in the art.

should-be limited only'by thesc ope. of the hereinafter The scope of the invention appended claims.

-I claimi 7 V 1. A Window snubbing device including a supporting bracket'and a=rigid snubbing element supported for rotation about an axis on said bracket,"handle means for rota'ting said element, said element having a plurality of flat surfaces extending generally parallel to said axis and connected to form corners between adjacent surfaces,

7 each of said surfaces being located at varying radial distances from the axis of rotation of said elmenflthe in- -cluded angle defined by said adjacent surfaces 'at said corners being an obtuse angle, the angle between adjacent surfaces and thedistances of adjacent surfaces from said axis of rotation being such that said element may have one fiat surface engaged witha Windowpane and then be rotated to a position disposing an adjacent I surface of greater radial distance adjacent said pane and in pressure engagement; therewithiwithout substantial obstruction-from said corner in moving between said posi= tions', the snubbing surface at each corner andof greater radial spacing than its adjacent snubbing surface being generally perpendicular to the radius at that corner.

2. The structure of claim 1 wherein said supporting means includes a bracket having a flat surface adapted to be fixed to one flat surface of said window frame, said bracket having upstanding ears supporting a pivot pin, said snubbing element being mounted on said pivot pin for rotation.

3. The structure of claim 1 wherein all of said surfaces are located in one quadrant of a circle described about said axis of rotation and the included angle between adjacent surfaces is on the order of 150 degrees.

4. A window structure comprising a pair of relatively slidable window panes positioned in groove means in a window frame, said panes partially overlapping one another when in the closed position and substantially overlying each other in the open position, snubbing means for holding said panes in a selected position, said snubbing means including a supporting bracket and a rigid snubbing element supported for rotation about an axis on said bracket, handle means for rotating said element, said element having a plurality of flat surfaces extending generally parallel to said axis and connected to form corners between adjacent surfaces, each of said surfaces being located at varying radial distances from the axis of rotation of said element, the included angle defined by said adjacent surfaces of said corners being an obtuse angle, the angle between adjacent surfaces and the distances of adjacent surfaces from said axis of rotation being such that said element may have one flat surface engaged with a window pane and then be rotated to a position disposing an adjacent surface of greater radial distance adjacent said pane and in pressure engagement therewith without substantial obstruction from said corner in moving between said positions, the snubbing surface at each corner and of greater radial spacing than its adjacent snub-hing surface being generally perpendicular to the radius at that corner.

References Cited in the file of this patent UNITED STATES PATENTS 1,451,359 Campbell Apr. 10, 1923 2,423,015 Goepfrich et a1 June 24, 1947 2,700,801 Pierson Feb. 1, 1955 2,900,679 Migneault et a1 Aug. 25, 1959 2,988,787 Migneault et a1. June 20, 1961 3,015,134 Migneault et al Ian. 2, 1962 FOREIGN PATENTS 228,928 Australia June 30, 1960 879,552 Great Britain Oct. 11, 1961 

1. A WINDOW SNUBBING DEVICE INCLUDING A SUPPORTING BRACKET AND A RIGID SNUBBING ELEMENT SUPPORTED FOR ROTATION ABOUT AND AXIS ON SAID BRACKET, HANDLE MEANS FOR ROTATING SAID ELEMENT, SAID ELEMENT HAVING A PLURALITY OF FLAT SURFACES EXTENDING GENERALLY PARALLEL TO SAID AXIS AND CONNECTED TO FORM CORNERS BETWEEN ADJACENT SURFACES, EACH OF SAID SURFACES BEING LOCATED AT VARYING RADIAL DISTANCES FROM THE AXIS OF ROTATION OF SAID ELEMENT, THE INCLUDED ANGLE DEFINED BY SAID ADJACENT SURFACES AT SAID CORNERS BEING AN OBTUSE ANGLE, THE ANGLE BETWEEN ADJACENT SURFACES AND THE DISTANCES OF ADJACENT SURFACES FROM SAID AXIS OF ROTATION BEING SUCH THAT SAID ELEMENT MAY HAVE ONE FLAT SURFACE ENGAGED WITH A WINDOW PANE 